CAJ | 학술논문

传统三电平电路的空间矢量调制(Space Vector Pulse Width modulation,简称SVPWM)因运算复杂,限制了它在实际中的应用.提出一种新的SVPWM算法,把空间平面划分为12个直角三角形区域,用空间电压矢量所在的直角三角形所对应的基本开关矢量来合成.对该算法进行了详细的数学推导,并给出了软件流程图.在实验室建立了三电平功率因数校正电路,通过DSP运用该算法来控制,实验结果证明该算法简单易行,便于数字化实现.
전통삼전평전로적공간시량조제(Space Vector Pulse Width modulation,간칭SVPWM)인운산복잡,한제료타재실제중적응용.제출일충신적SVPWM산법,파공간평면화분위12개직각삼각형구역,용공간전압시량소재적직각삼각형소대응적기본개관시량래합성.대해산법진행료상세적수학추도,병급출료연건류정도.재실험실건립료삼전평공솔인수교정전로,통과DSP운용해산법래공제,실험결과증명해산법간단역행,편우수자화실현.
Conventional space vector pulse width modulation (SVPWM) algorithm for three-level circuit is not widely used in practice for its complicated calcu-lations.A novel SVPWM algorithm is proposed.In this novel algorithm,the space plane is divided into 12 right-angled triangle fields,and the space voltage vector is synthesized by several switch vectors corresponding to the right-angled triangle which contains the terminal of the reference vector.Mathematical calculations of this algorithm are performed and the software flow chart is given.The algorithm is simple and convenient for digital realization.A three-level PFC circuit is set up in lab and the algorithm is applied to it by DSP.The experimental results prove the feasibility of this algorithm.